72122222102 has 32 divisors (see below), whose sum is σ = 127015553280. Its totient is φ = 30065631840.

The previous prime is 72122222099. The next prime is 72122222119. The reversal of 72122222102 is 20122222127.

It is a happy number.

It is a super-2 number, since 2×72122222102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2018549 + ... + 2053967.

It is an arithmetic number, because the mean of its divisors is an integer number (3969236040).

Almost surely, 2^72122222102 is an apocalyptic number.

72122222102 is a deficient number, since it is larger than the sum of its proper divisors (54893331178).

72122222102 is a wasteful number, since it uses less digits than its factorization.

72122222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39396.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 72122222102 its reverse (20122222127), we get a palindrome (92244444229).

The spelling of 72122222102 in words is "seventy-two billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred two".